Winding-machine.



WITNEssEs F. S. RAND & G. N. TAYLOR.

WINDING MACHINE.

APPLICATION FILED APR. 8. 1914.

Patented Dec. 7, 1915.

3 SHEETS-SHEET l.

ENTO s AT-ro NE s F. S. RAND & G. N. TAYLOR.

.WINDING MACHINE.

APPLICATION FILED APR. 8. mm.

Patented Dec. 7, 1915.

3 SHEETSSHEET 2.

m i m "M E f D\ Wax Wm a MA F. S. RAND & G. N TAYLOR.

WINDING MACHINE.

APPLICATION FILED APR-8, 1914.

1,]L63 U3, Patented Dec. 7, 1915.

a SHEETSSHEEI' a.

ATTORNEY fit RHODE ISLAND, ASSIGNORS TO UNIVERSAL WINDING MAINE, A CORPORATION OF ELAINE.

lEES'IUS S. RAND, 0F PROVIDENCE, AND GEORGE N. TAYLOR, OF EAST PROVIDENCE,

COMPANY, OF PORTLAND,

WINDING-MACHINE;

Specification of Letters Patent.

Patented 11cc. "3, 1915..

Application filed April 8, 1914. Serial No. 830,441.

To all whom it may concern:

Be it known that we, Fnsrtrs S. RAND and GEORGE N. TAYLOR, citizens of the United States, residing at Providence and East Providence, respectively, inthe county of Providence and State of Rhode Island, have jointly invented certain new and useful Improvements in Winding-Machines, of which the following is a specification.

Our invention consists of improvement in winding machines and relates particularly to friction or drum winders in which the yarn-cop or thread-package is rotated through contact of its surface with a drive-roll or drum; and the yarn or thread is laid in place by a traversing thread-guide reciprocated in a path opposite the winding-spindle.

The object of our present improvement is to provide means for controlling the ratio of speed between the drive-roll and threadguide to effect a differential change therein, whereby the method of depositing the coils of yarn in place on the cop will result in more uniform and perfect winding as more fully explained hereinafter.

Our invention also contemplates other features of improvement as later explained.

The mannef and means for carrying out the line XX of Fig. 1, looking in the direction indicated by the arrow a, Fig. 3 is a detail View of the driving-connections of the machine showing the-gear-casings in section to illustrate the mechanism contained therein; and Fig. 4 is a view in detail of the differential speed-changing device withthe parts shown in a different position from that illustrated in Fig. 1; Referring first to Figs. 1 and 2, B designates the main frame of the machine which 1 is provided with bearings for twohorizontal shafts C and D. l/

On the lower shaft 0 is fixedly mounted a usual form of traverse-cam C adapted to reciprocate the traversing thread-guide E; while fast on the upper shaft D is the drive-roll or drum D from which the cop is driven. The winding-spindle G, which is adapted to receive the cop-tube z or other is hinged on the carriage H by means of onev or more pivoted arms k see Fig. 2, so as to support the spindle G to normally maintain the cop directly above the driving-drum D and in contact therewith during the winding. The arrangement of these partsis described mo-re in detail in our previous application, Serial No. 824,490, filed March 13,

' 1914, and will. not be further explained herein, it being sufficient, to state that a usual hand-lever I is employed for operating the.

spindle-bearing manually, and suitable detent-Ineans are provided for automatically controlling the position of the spindle in relation to the drive-roll to maintain or arrest the operation of winding the yarn thereon.

The thread-guide E which traverses the yarn on the winding-spindle G is mounted on a carriage E which slides on'two horizontal rods 6, 6 extending between thesides of the frame B, see Fig. 2. Connected with the carriage E is a cross-head 7 which slides in grooves f, 7" formed in the parallel sides of a traverse-frame F. On the under side of the cross-head f is a roll or stud c which engages the groove 0' in the cam C as shown more particularly in Fig. 1. The frame F is formed with two legs f 7 straddling the cam C and pivotal-1y mounted onthe cam-shaft C. The frame F may be heldfast with the frame B aS described in ourapplication for patent previously referred to or,

if desired, may be continuously oscillated.- about the axis of the cam-shaft C to inter-I mittently shift the cam-roll c in the camgroove 0'. The purpose of this latter arrangement is to break up or prevent what is known as ribbon-wind on the surface of the cop as fully explained in our previous application, Serial No. 813,013, filed Jan.

19, 1914:- This feature of the machine, however, is not-essential to the present invention and will not therefore be enlarged upon herein.

' to the shaft 6.

001). The usual practice in machines of this K on the shaft D. Mounted on the end of the shaft D is a cone-pulley L from which rotation is transmitted to an oppositely-abranged cone-pulley M by means of the usual driving-belt Z. The pulley M is mounted fast on a shaft m which is rotatable in a bearing n formed as a part of; a gear-casing N. The casing N is mounted on the end of the cam-shaft C and incloses a gear 0 fast on said shaft and arranged to mesh with a pinion 0 fast on the inner; end of the shaft m. The main driving-shaft J drives the shaft D through the gears K, K and rota- .tion is imparted by the pulley L toth'e pulley M through the belt Z, and transmitted thence through the shaft m and gears O, O

The shaft C. carries the cam C which reciprocates the thread-guide E and it has been determined that an improvementin the winding can be effected by varying the speed of'the guide in relation to that of the drive-roll D throughout the building of the classhas been to maintain a constant ratio between the speed of the drive-roll and that of the thread-guide'.- With this arrange.

ment, since the speed of rotation of the cop or package decreases as its diameter'ina ,creases, a considerable change will take place in the ratio between the speed ofthe cop and that of theguide. In other words, the cop will be rotated with a relatively large number of turns during each traverse of the guide at the beginning of the winding and generally only a fraction of, a turn to" one traverse of the guide at the finish of the winding. This results in a considerable disparity between the number of winds at the beginning and completion of the cop, and it is'a well known fact that such a'condition has inherent disadvantages which result in defectsin the winding and cause irregularities in the delivery of the yarn when the cop is unwound.-

When the yarn is wound from end to end of the cop with a relatively large number of turns it will hold its place, better than when wound with only a few turns, The coils are less liableto slip and beconie displaced when wound with arelatively slight pitch or lead; while, on the other hand, if the pitch or angle of the coils is made too great there will be a tend- Preferably, the shaft J carries a spiral-gear K meshing with a similar gear which .carries the winding-spindle ency for the yarn to pull in from the ends of the cop and this will cause irregularities liable to roll over the edges and draw across the ends, making what are technically called cobwebs fects of cobwebs and other malformations in drum-wound cops are highly objectionable since they prevent, free delivery of the yarn in unwinding and otherwise lessen the commercial value of the package. As

before stated, they are usually caused by the rapid decrease in the number of winds from start to finish of the cop and it has been demonstrated that if the reduction in the number of winds is made less pronounced the cop is greatly improved. We have found that if the winding is started with say five-and-one-half or approximately that number of winds and reduced to not less than "about two-and-one-half winds,

a much more perfect cop can be produced. To eflect this lessenlng of the disparity between the number of winds at the start It is well known that these deand finish ofvthe cop and secure the preferred rate of change above specified we employa mechanism for obtaining a differential ratio between the speeds of the driveroll and thread-guidearranged as follows:

As before stated, the cam-shaft C which rotates the cam Cto reciprocate the threadguide E is driven from the shaft D through the medium of the cone-pulleys L-and M. To vary the ratio of speed between the shafts C and D the belt Z which connects the pulleys L and M is shifted longitudinally ofthe latter through the operation of a shipper-fork P, see Figs. 1 and 4. Preferably, the fork P is mounted on or formed as a part of an elongated bearing-hub p adapted to slide on a horizontal rod 9 projecting from the side of the frame B. The sliding movement of the fork P is effected through the operation of an arm or lever B pivoted at r on a bracket 7" fastened to the base of the frame B. The upper nd of the lever B is formed with a fork T which straddles a roll 17 mounted on .a screw 39 secured in a lug 79* on the hub p of the fork P. c

The lever R -is operated through means connecting it with the sliding carria e H as next described;

Referring 'now to Figs. 1, 2 and 4, the carriage H is formed with an arm h to which is attached the upper end of a vertical bar or rod S through the means of a 'proaches a horizontal position.

of the frame B and moves upwardly with the carriage H as the winding spindle G recedes from the drive-roll D during the growth in diameter of the cop. The rod S has several functions: that of checking the downward movement of the carriage H through the operation of suitable doggingmechanism engaging therewith, and also that of serving as an element of the detentdevices for controlling the position of the cop in relation to the drive-roll whereby the operation of the machine can be automatically arrested, all as described in our pending application herein first referred to. Its purpose in connection with the speed-changing devices of the present invention is to operate the arm or lever R to slide the beltshipper P outward along the pulleys L and M as the cop increases in diameter. Secured to the lower end'of the rod S is an arm or extension 8 which projects through a slot 6 in the vertical member 6 of the frame B, see Fig. 2. The arm .9 is formed with a downwardly-curved portion 8 to which is pivotally attached the end of a link T .by means of the screw 6. The opposite endof the link T is pivotally secured to the upper end of the lever It bymeans of a screw 6. It will be seen that as the carriage H rises with the increase in diameter of the cop being wound on the spindle G the end of the link T which is attached to the rod S will ride upwardly to rock the lever B outwardly away from the side of the frame B. This movement of the lever R slides the shipperfork P along the rod 9' and shifts the belt Z toward the outer ends of the pulleys L and M. It is to be noted that the belt Z is shifted with a gradually retarded rate of movement for a purpose as laterexplained. That is to say the first part of the movement of the lever'R will be at a relatively fast rate, when the inner end of the link is at the lower end of its throw, and as the rod S rises the rate of movement of the lever will be gradually retarded until the link ap- This arrangement for operating the belt-shipper with a retarded rate of movement in shifting the belt from one end of the cone-pulleys to the other is a novel and essential feature of our invention asmore fully pointed out hereinafter.

As the cop builds up on the winding-spin dle with its mass becoming greater and greater its increasing weight will naturally add to its pressure on the drive-roll. Before the cop attains its maximum diameter thissincreased pressure is liable to cause the ends to bulge, especially when soft yarn is being wound, and therefore it has been found advisable to correct this condition. With this object in view we employ a counterbalancing-device acting on the carriage H which carries the winding-spindle G. Referring to Fig. 4, an arm is pivotally mounted on a stud u screwed into the side of the gear-casing u which incloses the gears K,

K. The hub of the arm U is formed with a sleeve u on which is mounted the hub of a second arm U. The hub u of the arm U is split at u and a binder-screw a serves to clamp it on the sleeve u The two members U, U form virtually a bell-crank-lever, the arms of which can be adjusted in rela tion to each other by releasing the binderscrew u? Extending from the end of the arm U is a rod w on which are mounted the compensating-weights IV, W, etc., held in place by the collar '10. Connected to the outer end of the arm U is a link if, the opposite end of which is fastened to the link T which, in turn, is connected with the arm 8 of the vertical rod S.

Having now described the construction guide E, whence it feeds to the winding-- spindle G. With the carriage H in its lowermost position the arm 8 0n the rod S will be in such position that the bell-crank-lever U, U will be held by the link a with its arm U upright. Under these conditions the Weights W will have no effect on the carriage H, but the influence of gravity on thecarr1age and its connected parts will act to hold the cop-tube e in close contact with the and arrangement of the various mechanisms drive-roll D. In winding some varieties of material this pressure may be found. too great, however, and in such cases, then the arm U of the bell-crank-lever can be swung over to the right and adjusted to such a position, by means of the binder-screw u that the weights W will act through the link a to counterbalance a portion of the weight of the carriage and its parts. In most instances, however, the two arms'U, U will be own in Fig. 1.

adjusted in the relation s Now, as the yarn builds up on the winding spindle G 'and the carriage H is forced upwardly on therod H the link it will rock the lever U, U to move its arms clockwise. As the arm U swings'to the right the weights W are carried over their center of support and gradually they begin to exert a pressure tending to lift the carriage H. In this way by providing the proper number of weights W the increase in weight of the cop during its growth can be accurately compensated for and hence the pressure of the cop on the drive-roll will be maintained substantially uniform throughout the whole winding.

At the (start of the winding, with the carriage H inits lowermost position as shown in Fig. 1, the link T will be in such position that the lever B will be rocked to the left and the shipper-fork P will maintain the belt 1 at the left-hand end of the pulleys L and M. As before stated, the shaft 1) is rotated from'the driving'shaft J at a constant rate of speed. Now, with the belt Z at the larger end of the cone-pulley L and driving therefrom, to the smaller end of the pulley M the latter will be rotated at its maximum speed. Consequently, the cam-shaft C which is driven from the pulley M, and the cam C rotated therewith, will have .a maximum speed at the start of the winding corresponding to the relatively fast speed of the winding-spindle when the diameter of the cop is at its minimum. As before mentioned, we have determined that the winding can be performed to the best advantage by starting the cop with about five-and-one-ha'lf revolutions of the winding-spindle to one traverse of the guide, and by finishing the cop with about two-and-one-half winds, so that the cone-pulleys L, M and gears O, O are preferably proportioned to give this result. One peculiar feature of'the change in wind during the growth of the cop is that the variation is much more rapid at the small diameter than at a relatively large one. That- 'is to say, the wind changes very rapidly at the beginning of the cop when its diameter is relatively small, while after the cop reaches say about one-half of its growth the variation in the wind is much less marked. For this reason it has been found advisable to adapt the speed-changing mechanism of the machine to actv rapidly at first, and to be gradually retarded'toward theend, so as to be somewhat more nearly proportionate to the quick change in speed-ratio between the cop and drive-roll. To accomplish this purpose the operation of the link T on the lever R is so timed that the belt-shipper P will be moved outwardly along the pulleysL and M very rapidly at first and more slowly toward the last. 11 this way the speed of the thread-guide E operated from the cam C is -made to agree more proportionately with the change in speed of the cop, although an exact proportion in this respect is not neces sary.

By changing the speed-ratio between the drive-roll and thread-guide in this manner it is possible to so regulate the number of winds in proportion to the diameter of the cop that the pitch or angle of the coils or turns in the winding will remain substantially the same from start to finish. In

other words, the coils of yarn will be laid onthe surface of the cop with substantially the same pitch or angle at all diameters throughout the winding. Through this improved method of regulatin the wind the disposition of the coils is iept more uniform and regular and therefore the package is much superior both in appearance and in its capacity for free delivery of the yarn in unwinding. Furthermore, the changes in the number of winds at difierent stages of the windin are so few that there is less tendency for t ecoils of yarn to crowd together or pile, even if no special means are employed for breaking up the ribbonwind.

We are aware that it has heretofore been proposed in winding machines to regulate the speed-ratio between the driving-drum and traverse-guide by means of a shiftable belt operating on cone-pulleys. In the present invention, however, we employ a different arrangement of means for this purpose and one so arranged that the ratio of change can be adjusted more nearly in proportion to the variation in speed of rotation of the cop. For this reason our improved machine is better adapted for winding fine yarn or thread in commercial packages suitable for a wide variety of uses in the textile art Ourinvention also provides means for relieving the increased pressure of the cop on the guide-roll consequent upon the increase in weight of the rowing yarn-mass,

as previously described, and hence the prodcarriage for supporting the spindle to adapt it to recede from the drive-roll as the cop increases in diameter, a thread-guide, means to traverse the guide, oppositely-arranged cone-pulleys connecting the traverse-means with the drive-roll, a belt connecting said pulleys, a lever for shifting the belt along the pulleys, and a link connecting said lever to be operated from the carriage to cause the belt to be shiftedon the pulleys with'a gradually retarded rate of movement as the winding-spindle recedes from the drive-roll.

' 2. In a winding machine, the combination with a winding-spindle, of a drive-roll for rotating the cop, a sliding carriage for sup porting the spindle to adapt it to recede from the driveroll as the cop increases in I diameter, a thread-guide, means to traverse theguide, oppositely-arranged cone-pulleys drive-roll with the connecting the traverse -means with the driveroll, a belt connecting said pulleys, a shipper-fork for shifting the belt along the pulleys, a pivoted lever for operating the fork, a link connected with said lever, and means connecting said link with the carriage to cause the movement of the latter to swing the lever and operate the shipper-fork with a differential rate of movement.

3. In a winding machine, the combination with a winding-spindle, of a'drive-roll for rotating the cop, a bearing for supporting the spindle to adapt it to recede from the growth of the winding, a thread-guide, means to traverse said guide, cone-pulleys connecting the drive-roll with the traverse-means, a belt connecting the cone-pulleys, a belt-shipper movable longitudinally of the aXes of the pulleys to shift the belt thereon, a rockable lever, means connecting the lever to the belt-shipper, a member connected with the spindle-bearing to be moved thereby away from the pivot of the belt-shipper lever, and a link connecting said member with the lever to cause the latter to be rocked with a progressively retarded rate of movement.

4:. In a winding machine, the combination with a winding-spindle, of a drive-roll for rotating the cop wound on the spindle, means to support the spindle to adapt it to recede from the drive-roll as the cop increases in diameter, and means connected with the winding-spindle and operated from the movement thereof-to compensate for the increase in pressure of the cop on the drive roll consequent upon the increase in weight of the yarn-mass during the growth in the winding.

5. In a winding machine, the combination with a drive-roll for rotating the cop, of a winding-spindle adapted to recede from said roll as the cop builds up thereon, a pivoted lever, weights on said lever, and means to rock said lever from the movement of the winding-spindle to cause the weights to counteract the increased pressure of the cop on the drive-roll due to the increase in weight of its mass.

6. In a winding machine, the combination with a drive-roll for rotating the cop, of a winding-spindle adapted to recede from said roll as the cop builds up thereon, a bellcrank-lever, weights on one arm of said lever, and means for connecting the other arm of the lever with the winding-spind1e whereby the movement of the latter will rock the lever to cause the weights to compensate for the increase in pressure of the cop on the drive-roll due to the increasing weight of the yarn-mass.

7. In a winding machine, the combination with a drive-roll for rotating the cop, of a winding-spindle adapted to recede from the roll as the copbuilds up thereon, a bellcrank-lever connected with the spindle to be rocked from the movement of the latter, means to adjust the arms of the bell-cranklever in relation to each other, and weights on one arm of the lever adapted to counterbalance the increase in pressure of the growing cop on the drive-roll when the lever is rocked.

8. In a winding machine, the combination with a drive-roll for rotating the cop, of a winding-spindle on which the cop is wound, a bearing for supporting the spindle to adapt it to recede from the drive-roll as the cop increases in diameter, a bell-crank-lever, weights on one arm of said lever, and a link connecting the other arm of the bell-cranklever with the spindlebearing to adapt the movement of the latter to rock the lever and relieve the pressure of the copon the driveroll throughout the winding.

In testimony whereof we afiix our signatures in presence of two witnesses.

FESTUS S. RAND. GEORGE N. TAYLOR. Witnesses: 1

ARTHUR A. ARMINGTON, HERBERT K. ALLARD. 

